The US Palm STORM CAT4 is a compact semi-automatic pistol chambered in 5.56x45mm, configured for maneuverability while retaining full-featured controls. It features an 11.5-inch barrel with a 1-in-7 twist rate and a threaded 1/2×28 muzzle, allowing compatibility with standard muzzle devices. Finished in matte black, the platform measures between 29 and 32.3 inches in overall length depending on stock adjustment and weighs approximately 6 pounds, maintaining a lightweight profile.
This model is equipped with a collapsible and folding stock, US Palm furniture, and a Mono-Loc handguard for accessory mounting. It includes ambidextrous controls such as an ambi thumb safety and is fitted with a Hyperfire EDT trigger for consistent operation. The pistol feeds from a 30-round magazine and ships with one magazine included. With no factory-installed sights, the STORM CAT4 is optics-ready and suited for applications requiring a compact 5.56 platform.
